Originally Posted by
joepilot
Ewfflyer,
Yes, the 20 gal per side is conservative (high), but I think that an owner has to plan on the renter trying to get there fast, and using 75% power, such as 24" at 2,400 rpm, and leaned to 100 rich of peak or a little richer, depending on experience level.
I like a dry rental, but there is always somebody who may lean a little too aggressively, and detonation is expensive.
Joe
Good note, and actually as long as you are 65%(23-squared) or less, detonation isn't a problem with the IO-520. Great engine as far as I'm concerned. It can be a very efficient aircraft if flown right.